July 24, 2023 at 11:33 am
schejarla
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I have used the symmetric boundary conditions to solve only portion (upper-half) of the waveguide, please see the below figures

I have got some reasonable results but the dimension of the designed wavegyuide are different after FDE solver as shown below. Why is it so?

Do I need to select the FDTD whole region of the waveguide (not only the upper-part)? Please kindly clarify. I am trying for the similar modes of more higher order.